From mboxrd@z Thu Jan 1 00:00:00 1970 From: peter.chen@freescale.com (Peter Chen) Date: Mon, 14 Oct 2013 09:58:11 +0800 Subject: [PATCH 02/12] usb: phy-mxs: Enable IC fixes for mx6 SoC serial In-Reply-To: <201310140407.11129.marex@denx.de> References: <1381568986-19802-1-git-send-email-peter.chen@freescale.com> <201310121138.16584.marex@denx.de> <20131014013119.GB3879@shlinux1.ap.freescale.net> <201310140407.11129.marex@denx.de> Message-ID: <20131014015810.GH3879@shlinux1.ap.freescale.net> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Mon, Oct 14, 2013 at 04:07:10AM +0200, Marek Vasut wrote: > Dear Peter Chen, > > > On Sat, Oct 12, 2013 at 11:38:16AM +0200, Marek Vasut wrote: > > > Hi, > > > > > > > After adding IC fixes bits, some PHY bugs are fixed by > > > > IC logic. > > > > > > Can you please elaborate what those bits do exactly ? They seem like a > > > magic stuff to me thus far, which is not exactly helpful . I can't find > > > them in the datasheet either. > > > > Yes, these bits are added at late TO verion for i.mx 6, and these TO > > versions will be for mass production, unfortunately, the related doc > > update may be forgotten. > > > > These two bits are related to two PHY bugs, two PHY bugs are still existed > > at mx28 and mx23, one bug is fixed at mx6dq and mx6dl, and both of two > > bugs are fixed at later mx6 (like mx6sololite and later SoCs), but the IC > > fixes are not enabled by default, it needs software opens it. > > Sure, I get it. But what exactly does that bit do? Can you add a proper (and > likely beefy) comment into the code to supplement the missing parts in the > datasheet? OK, I will add them at v2. -- Best Regards, Peter Chen